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XMM-Newton Science Analysis System

attcalc (attcalc-4.39) [xmmsas_20211130_0941-20.0.0]



The task attcalc calculates linearized sky coordinates (i.e. a tangential projection on the sky) on an event-by-event basis, and stores these new coordinates in the input event list in columns X and Y, as offsets from a particular reference point.

XMM-Newton SOC -- 2021-11-30